Black screen and dmesg HDR infoframe flood after monitor power cycle (DP)

Help
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1

Steps to reproduce:

  1. Enable HDR on a DisplayPort monitor in System Settings.

  2. Disconnect and reconnect the monitor’s power cable (eg like in power drop/surge) while the PC remains on.

Observed result:

  • Monitor turns on to a black screen.

  • dmesg gets flooded with repeated HDR Infoframe packets:

    HDR SB:83 02 00 f1 84 d8...

  • Link does not recover until manually switching monitor inputs (DP → HDMI → DP)

Operating System: Fedora Linux 44
KDE Plasma Version: 6.7.3
KDE Frameworks Version: 6.28.0
Qt Version: 6.11.1
Kernel Version: 7.1.6-201.fc44.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 32 × 13th Gen Intel® Core™ i9-13900K
Memory: 96 GiB of RAM (94.0 GiB usable)
Graphics Processor 1: Intel® Graphics 770
Graphics Processor 2: AMD Radeon RX 560 Series
Manufacturer: ASUS
2

I see 6 HDR messages when I turn the screen back on that’s all.

How many are you seeing?

For me the screen recovers on AMD RX 7800 XT.

3

30 times
I should mention that I use Intel GPU and motherboard DP as primary

[150591.567265] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.567269] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.567533] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.567534] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.567672] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.567673] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.567831] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.567831] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.568437] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.568437] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.568588] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.568589] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.569007] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.569008] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.569153] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.569154] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.595319] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.595322] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.595606] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.595607] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.596074] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.596075] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.596248] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.596248] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.598632] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.598635] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150591.598878] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150591.598879] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00
[150604.518924] HDR SB:83 02 00 f1 84 d8 3c 43 34 82 81 60 1d 89 09 09
[150604.518927] HDR SB:3d 47 40 58 01 e2 0d 58 01 58 01 00 00 00 00 00